Recently, the practical use of Transient water waves for Testing Ship Models had been shown by papers, (1), (2), (3), (4). But in making use of this wave, there are restrictions e. g. the linearity, the length of the time history, etc. So the control of Transient Water Waves is necessary. In this paper, we restrict our attentions to the Concentrative Transient Water Wave (write T. W. W.) and tried to generate T. W. W. with arbitrary characters in frequency domain (Fourier Spectrum) and with arbitrary concentrating position. We considered further the estimation of wave profile of T. W. W. Consequently, by making use of frequency transfer functions, we could show the method of the generation of T. W. W. with a practical precision. In this paper we showed two T. W. W. The Constant Amplitude T. W. W. is useful like the Constant Amplitude Power Spectrum of white noise. And the Constant Wave Slope T. W. W. has a good character against the wave breake down. For the Concentration, to determine the sweep time by phase velocity is doubtful. By the experiment, we showed that the wave of an apparent frequency moves with its group velocity, and the T. W. W. moves with its mean velocity as a whole. So, the sweep time should be determined by the group velocity. Then we explained roughly the concentration of T. W. W. by phase function in time domain. To control the concentration precisely, the transfer function must be introduced. So we proposed a definition of the concentration of T. W. W, in frequency domain by defining time length ( T_l ) of the T. W. W, and making it minimum. This definition seems to be appropriate. After that, the transition of the phase of T. W. W, was understood precisely, and the position of the concentration could be known exactly. At the last, we showed the estimation of the wave profile by an arbitrary time history and the comparison with photos was made. From the calculated wave profile at the concentration, the wave break down seemes to be evaluated by the apparent wave slope. For the limit of the wave height and the wave slope, a new experiment is now planned.